Wheel.



E. GEIGER.

WHEEL. APPLICATION FILED AUG. 18, 1909.

990,251. Patented Apr.25, 1911.

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E. GEIGER.

WHEEL.

APPLICATION rmm 1.11s. 18, 1909.

990,251. Patented Apr. 25, 1911.

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a will? EUGEN GEIGER, OF KARLSRUHE, GERMANY.

WHEEL.

Specification of Letters Patent.

Application filed August 18, 1909.

Patented Apr. 25, 1911.

Serial No. 513,518.

To all whom it may concern:

Be it known that I, EUGEN Gnrenn, engineer, a subject of the GermanEmperor, residing at Karlsruhe, in the Grand Duchy of Baden and Empireof Germany, have invented certain new and useful Improvements in WheelsProvided with Sieve-Like Scoops and Adapted for the MechanicalFiltration of Sewage-\Vater, of which the following is a specification.

The object of this invention is an apparatus adapted for the mechanicalfiltration of sewage water.

This apparatus consists of a wheel built into the sewage canal,rotatable upon a horizontal shaft, placed at right angles to the canal,and provided with sievedike scoops, which separate the refuse from thewater, running below the shaft in an opposite direction to the rotationof the wheel, and which gradually move this refuse toward a device inthe interior of the wheel which dischar es it therefrom. The wheel isfurther provlded with a device which shortly after the scoops havedischarged the refuse removes the mud clinging to the scoops and bringsthis also to the above-mentioned discharging device.

In the accompanying drawing is illustrated a constructional form of theobject of this invention.

Figure 1 is a cross section of the wheel provided with sieve-likescoops. Fig. 2 is a side elevation of the driving mechanism of thepurifying device. Fig. 3 is a longitudinal section of the wheel, andFigs. 4, 5 and 6 show a part of the filtering device on a larger scalein front elevation andalso inside elevation in various positions.

The wheel consists of two plane side walls a and five curved, sieve-likescoops b arranged between them. The sheet metal walls a are strengthenedby transverse castiron arms 0 to which are secured hollow pivots d. Thelatter rotate in bearings e which are rigidly mounted on the sides ofthe sewage canal. Around the periphery of the cross arms 0 (Fig. 3) isfurther provided a toothed flange f; with this gears a small 50 pinion(not shown) which is mounted upon the shaft of an electric motor orother power engine or upon any other driven shaft.

In the interior of the wheel is provided a stationary tin gutter g; thepart of this gutter between the side walls a is open on the upper side,while portions surrounding the ends of the gutter projecting through theplvots (l, and fixed in supports h, are entirely closed except at theends. In the gutter 9 is provided an endless delivery band 1' and on oneside of the wheel (left-hand side of Fig. 3) below the part of the bandi projecting from the gutter is provided a second delivery band 7:arranged at right angles thereto. Both bands run over rollers of whichthose outside the gutter g are connected by wheel gearing or belt driveto the driving gear of the wheel.

The wheel is rotated in the direction of the arrow 2 (Figs. 1 and 2),and the scoops thus successively dipping into and being raised out ofthe water, catch the refuse floating in the latter and allow it togradually slide on to the band i; it is then guided out of the wheel bythe bandz'on to the band is byi means of which it is discharged to ones1 e.

At the centers of the curves, which form the scoops b, and in thetransverse arms a, are mounted shafts Z which lie parallel to the axisof the wheel. On these shafts, within the side walls a, are mounted armsm, each consisting of two links, to which are fixed brushes n, andbeyond one of the side walls (left-hand side of Fig. 3) are mounted oneach shaft Z a toothed wheel 0 (Figs. 2 and 3) and a short arm ;0provided with a roller (1. On the same side, is fixed to the wall of thesewage canal an interrupted circular path T which lies at the side ofand concentric with the wheel. This path is provided with two toothedracks, an upper one s and a lower one If; these toothed racks formcurves which are concentric with the wheel shaft and lie in the plane ofthe toothed wheels 0.

On the rotation of the wheel the rollers 9 run in the path 1"; by thismeans the arms m with the brushes 1?. are at first held in theirinnermost position. At the moment, however, when one of the scoops brises out of the water the toothed wheel 0 of the corresponding cleaningdevices m, n gears with the lower rack s, by this means the cleaningdevice is moved outward when the brush is in the folded position (Fig.6). As soon as the brush 11 reaches the outer end of the scoop thetoothed wheel 0 runs oil the lower toothed rack s and gears with theupper toothed rack t; by this means the cleaning device is againmovedinward but the brush is in the extended position (see Figs. 4 and 5For the purpose of folding and extending the brushes 7?. there areprovided at both ends thereof spring-operated pins 2! (Figs. 3-6) and toeach of the side walls a are fixed outer and inner cam plates 4) and to(Figs. 1, 5 and 6). Guiding paths are formed in the latter by which,when the cleaning device is moving in'one direction, the pins are guidedso that they pass the cam surfaces without altering the position of thebrushes, while when traveling in the reverse direction they move overthe cam surfaces and thus fold or extend the brushes. The latter areheld in both positions by a small locking device which prevents anyunintentional alteration in the position thereof.

At the commencement of the inward movement the pins u of the foldedbrush run on the outer cam surface o by which they are extended (seeFig. 5) and during the inward movement brush the sieve Z). Toward theend of the inward movement the extended brush runs over the inner campiece to, when the pins u are forced backward by the inclined paths inthese pieces so that after passing the pieces they move rapidly forward.The brush then travels such. a distance. forward that all the refuse isthrown on to the center of the delivery band. The outer guiding surfacew, of the path 9", between the toothed racks s and t is provided in sucha manner that the cleaning devices'm, n on the termination of the inwardmovement travel a short distance outward beforereaching their positionof rest so that the pins u of the brush a abut against the rear .of thecam piece to (see dotted line Fig. 6) the brush thus receives a slightjolt and the material hanging thereon is thrown off. The brush retainsthis partly folded position in the position of rest of the cleaningdevice during the whole rotation of the wheel until the correspondingsieve-like scoop 6 again rises out of the water; the cleaning device isthen moved outward by the toothed wheel 0 gearing with the rack s whenthe pins u will slide over the rear of the cam pieces to and the brushesn will be folded entirely forward (see Fig. 6). The curved path 1" isembedded between the two racks s and t to permit of the free rotation ofthe arms provided with the rollers g and the toothed wheels 0 when thelatter pass the toothed racks.

What I claim and desire to secure by Letters Patent is 1. A sewageseparator comprising in combination, with a sewage channel, of a rotaryseparating device disposed in said channel and provided with curvedscreen scoops arranged to discharge centrally with respect to the axisof rotation of said separator, arms pivoted at the radial centers ofsaid scoops, spring controlled brushes pivoted on said arms for sweepingthe faces of the scoops to discharge the material centrally, cams forfolding the brushes inwardly on the inner stroke of said arms, means formoving the arms and brushes outwardly in a folded position and theninwardly to sweep the scoops, and cams for folding the brushes outwardlyat their outer stroke.

2. A sewage separator comprising in combination, with a sewage channel,of a rotary separating device disposed in said channel and provided withcurved screen scoops arranged to deliver toward the axis of rotation ofsaid separator, arms pivoted at the radial centers of said scoops,brushes pivoted on said arms, the pivots of each arm having a gear andalso a lever provided with a roller, guides acting through said rollersfor holding the arms and brushes near the center of rotation of saidseparator during passage of the scoops through the water, a rack foroperating gears to move an arm outwardly when its scoop raises out ofthe water, and a rack engaging such gear for quickly moving the arminwardly to sweep the contents of the scoop toward the axis of rotationof said separator, substantially as and for the purpose set forth.

8. A sewage separator comprising in combination, with a sewage channel,of a rotary separating device disposed in said channel and provided withcurved screen scoops, arms pivoted at the radial center of said scoops,brushes pivoted on said arms, mechanism for moving the arms outwardlyand then inwardly, said brushes being provided with pins, cams near thecenter of said separator havingradial cam faces for engagement by saidpins to fold the brushes inwardly when the arms are at their inmostposition, and cams having outwardly disposed cam faces for engagement bysaid pins to unfold the brushes when the arms are in their outermostpositions.

4:. A sewage separator comprising in combination, with a sewage channel,of a rotary separating device disposed in said channel and provided withcurved screen scoops, arms pivoted at the radial center of said scoopsand provided with folded brush channel and provided with curved screenscoops arranged to discharge centrally with respect to the axis ofrotation of said device,

' centrally disposed traveling means for rec'eiving the sewagedischarged from said scoops, arms pivoted at the radial centers of saidscoops and provided with folding brush structures, mechanism for movingthe arms outwardly and then inwardly, means auto- 10 matically foldingthe brush structures into an inoperative position on inward movementEUGEN GEIGER.

Witnesses AUGUST OI-INIMUS, FRIEDRICH OHNIMUs.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. G.

